Stencil-duplicating apparatus.



No. 786,634. PATENTED APR. 4, 1905. A. B. DICK.

STENCIL DUPLIGATING APPARATUS.

APPLIOATIOII FILED D220. 2.5. 1904 wxmessxzs: iNVENTOR c1 (QL @A ,5 JWW A BY I miwm\ ATTORNEY Yi No. 786,634. d

UNITED STATES To all 1072 0772, it ntrty concern:

Be it known that I, ALBERT B. Drcx, a citizen of the United States, residing at Lake Forest, in the county of Lake and State of T f 5 Illinois, have invented a certain new and useful Improvement in Stencil-Duplicating Apparatus, of which the following is a specification.

The invention concerns particularly that IO type of stencil-duplicating apparatus in which i is employed a rotating or oscillating drum 1 provided with a stencil-carrier of foraminated material, upon the'exterior whereof the stencil is supported. 1:5 The object of the invention is to provide a simple, durable, and eficient means of low manufacturing cost for securing the stencil- In a preferred embodiment of such means I 2120 employ a stencil-stub provided at one edge y with a securing device whereby the same i may be made fast to a part moving with the drumas, for instance, the part known as the button-bar and now commonly in use,

2: 5 the edge of the foraminated stencil-carrier, or the cross-rods whereby an ink-pad is secured upon such carrier. Said stub is provided with rearwardly-extending portions having means for the attachment of a stencil-sheet thereto and in such embodiment taking the form of headed projections extending outwardly from the axis of the drum and adapted for coaction with the slotted forward end of a stencil-sheet. The rearward end of such stencil-sheet may 3 5 be secured in position upon the drum by any suitable meansas, for instance, a clamp or the adhesive power of the ink with which the underlying ink-pad or stencil-carrier may be provided. A stencil-stub so constructed oo- 4 cupies a distinct field of utility when used either in connection with the button-bar of a duplicator-drum or independently thereof. Thus should the buttons upon such a bar become injured or should it be desired to utilize a stencil-sheet of less length than that required when such button-bar is employed for direct coaction with such sheet such a stencil-stub has been and will be found of great convenience, the same being adapted for ready sheet upon a drum of the character described.

Patented April 4., 1905.

PATENT OFFICE.

ALBERT B. DICK, OF LAKE FOREST, ILLINOIS, ASSIGI'TOR TO A. B. DICK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

STENCIL-DUPLICATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 786,634, dated April 4, 1905.

Application filed December 16, 1904. Serial No. 236,990.

and immediate application to the machine, there to perform the useful function of securely holding the forward edge of the stencil-sheet in position. Again, if desired, such a stencil-stub may be constructed of a ductile material, so that the extensions thereon carrying the projections designed for coaction with the slots or other openings in the forward edge of the stencil-sheet may, if occasion require, be slightly bent or moved relatively to each other in order that said stub shall accommodate a stencil-sheet in which the openings or slots have been so formed with reference to each other as to make coaction with the buttons upon the button-bar impracticable. 5

The embodiment of the invention above referred to is illustrated in the accompanying drawings, in which Figure 1 is a cross-section of the drum of a duplicating apparatus, and Fig. 2 is a perspec- 7 tive view of the stencil-stub above referred to detached from the drum.

Referring to the drawings, A designates one of the heads of the drum, B the stencil-carrier, of foraminated material, and Can ink-pad, of textile material, directly overlying the carrier 13 and secured in position thereon by means of headed rods D, the ends whereof may be received in jaws or notches formed in the heads A. Extending between and connecting said 0 heads is a button-bar E, provided with headed buttons 0.

Referring now to the stencil-stub, it will be seen that this may be readily and cheaply stamped in the form of a blank from a suit- 5 able material, such as metal, cardboard, etc. The forward edge of the stub F may be curved downwardly and rearwardly, as shown at f, to form a hook for coaction with any part moving with the drumas, for instance, the 9 button-bar E or one of the two rods D, where by the ink-pad C is held in position upon the carrier B, or, if desired, said stub F may be provided with a series of slots or openings of other shape coaeting with the buttons e to secure the forward edge of the stencil-stub in position; or, if desired, said stencil-stub may be provided with a series of openings having no attaching otlice, but merely l permitting the buttons e to pass therethrongh in order that the stub may lie close to the buti ton bar to which it may be attached, or, linally, said stub maybe provided with either of the slots or openings referred to and the hooleshaped portionsf as well in order that the same maybe readily attached either to the button-bar, to the ink-pad rods .1), or to the edge of the stencil-carrier B, as desired. Adjacent to its rearward edge the stub is provided with a series of beaded projections f, adapted for eoaction with slots or openings in the forward edge oi the stencil-sheet. Said lJlOjQCtiOHS may be formed upon the body of the stub F, if desired; but I prefer to form the same upon rearward extensions f of the stub F. i I the stub be formed of a ductile or flexible material, as a bore suggested, said extensions may under slight pressure be moved relatively to each other for the purpose of permitting coaction of the projections carried thereby with the slots or openings in stencilsheets the coaction of which with the buttons a on the lmtton-liiar E is im1 )ractic:ble by reason of incorrect spacing, etc.

The form and construction of the stencilj stub above described making it possible to produce said stub at low n'ianui acturing cost, it is contemplated that the same may be an adjunct more of the stencilmpel than 01 the duplicating-machinc, and, if desired, the same may be made with a varying arrangement of the headed projections 7" and extensions f with regard to their relation to each other in order that although the button-bar of the duplicator may be so arranged as to accommodate only stencil-paper having a certain arrangement of the end slots therein the operator shall have at hand means permitting him to use upon the same machine stencil-paper havii'ig a different arrangement 01 the slots and one making coaction of such paper with the button-bar of the machine impracticable, as above indicated.

Having now described my invention, what 2. In du flicating apparatus, the combination with adrum, of a part secured to and moving therewith, a stencil-stub, means adjacent to one edge for detachably securing said stub to such part, and studs or projections, adjacent to the other edge oi said stub, for coaction with a stencil-sheet, substantially as set forth.

3. In duplicating apparatus, the combination with a drum having a button-bar, ot' a stencil-stub, means for securing the same to said button-bar, and headed studs or projections carried by said stub and adapted to coact with a stencil-sheet, substantially as set forth.

1-. ln duplicating apparatus, the combination with a drum, of a part secured to and moving therewith, a stencil-stub, means adjacent to one edge for detachably securing said stub to such part, extensions adjacent to the other edge of said stub, and studs or projections car ried by said extensions and adapted to coact with a stencil-sheet, substantially as set forth.

5. In duplicating apparatus, the combination with a drum and a securing device carried thereby and adapted for coaction with a stencil-sheet prearranged for cooperation with such device, of a stencil-stub, means for securing the same to such device, and mechanism, carried by said stub for coaction with a stencil-sheet, substantially as set forth.

This specification signed and witnessed this 12th day of December, 1904.

ALBERT i5. DlCK.

Witnesses:

M. H. Bummer, It. R. HARRINGTON. 

